Several members of the state's delegation are millionaires, including Republican Reps. Fred Upton of St. Joseph, Joe Knollenberg of Oakland County's Bloomfield Township and Dave Camp of Midland, who all have extensive stock portfolios.

Rep. John Dingell, D-Dearborn, detailed numerous stock funds he owns along with investments held by his wife, Debbie Dingell, who serves as vice chairman of the General Motors Corp. Foundation. She separately holds stock and stock options from GM worth $650,000-$1.35 million.

The 2007 forms provide information on assets, outside income and privately funded travel besides the lawmakers' salaries of $165,200. Members of Congress list their assets in broad ranges and are not required to disclose the value of their homes.

Michigan has two House members who serve as committee chairmen: Dingell, who leads the powerful House Energy and Commerce Committee, and Rep. John Conyers, D-Detroit, who heads the House Judiciary Committee.

Dingell listed nearly two dozen stock funds worth between $700,000 and nearly $1.8 million. He also owns stock in companies such as General Electric Co., Bank of America Corp., DuPont Co. and Merck & Co.

Conyers only listed one major asset, a Detroit investment property worth $15,000 to $50,000. He took 14 private-funded trips during the year, traveling for speeches before the Rainbow Push Coalition in New York, local branches of the NAACP in Cincinnati and Chicago and the Los Angeles-based Community Clinic Association in San Diego.

Upton, the grandson of one of the founders of Whirlpool Corp., appeared to be the wealthiest lawmaker from Michigan, listing a family trust controlled by financial advisers worth $5 million to $25 million. He also holds Whirlpool stock and an investment account both worth $1 million to $5 million.

Knollenberg provided a detailed listing of his assets, including in his disclosure investment reports that he received from his financial advisers. Knollenberg listed stocks and other investments worth $1.43 million to $6.05 million.

Camp has a lengthy portfolio of stocks and government bonds, including $250,000 to $500,000 worth of stock in Midland-based Dow Chemical Co. His assets range from $3.9 million to $8 million.

Rep. Pete Hoekstra, R-Holland, the top Republican on the Intelligence Committee, noted stock funds worth between $180,000 and $400,000 and shares of companies such as oil refiner Interoil Corp. and Gentex Corp., an automotive and fire protection company.

Several lawmakers previously served in the state legislature before winning their seats in Congress. Reps. Tim Walberg, R-Tipton, Carolyn Cheeks Kilpatrick, D-Detroit, Vernon Ehlers, R-Grand Rapids, and Dale Kildee, D-Flint, receive pensions from their time in Lansing.

Rep. Bart Stupak, D-Menominee, received more than $18,000 in disability retirement pension from the state. Stupak was a state trooper before he was injured in the line of duty.